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Purple aragonite and sputnik aragonite also have a pseudo-hexagonal habit and get their hexagonal crystal shape from cyclic twinned growth—studied closely you can see similarities with the crystal growth of dolomite snowflakes
and nicer pieces are even framed for display
These pieces can be fascinating to study up-close
It is often cut into flat slabs to best show the layering
Dolomite snowflake (dolomite ps. after aragonite), twinned Coprolite Purple aragonite and sputnik aragoniteLocale: Roswell, New Mexico Approx dimensions: 2. 5 x 2. 25 x 1. 5" Approx weight: 203g These unusual pseudomorphs of dolomite after aragonite have earned the name snowflake because of their hexagonal shape which is often striated to give the mineral an appearance like a chunky snowflake. Pseudomorph means the mineral initially grew as aragonite, and then through geological processes the aragonite was replaced with dolomite. The new mineral will
